Trying to ask this girl out?

Ok so I really like this girl. But last year my mate had gone straight out and told her. So it's been almost a year since that and I still like her. So what do I do. I mean I still like her because she's smart, beautiful, and a really kind person. So what do I do, under these circumstances, to go out and attempt to ask her out? Thank you for kindly answering this question.